Improvement in sash-holders



H. THOMAS. Sash-Holders;

NO. 136,681. PatentedMarchH,l87'3.

AM PHOTO-LITHOGRAPHIL ca m: (osswmrmncsss) UNITED STATES PATENT OFFICE.

HENRY THOMAS, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 136,681, dated March 11,1973.

To all whom it-may concern:

Be it known that I, HENRY TnoMAs, of San Francisco city and county, State of California, have invented an Improved Sash Stop and Look; and I do hereby declare the follow ing description and accompanying drawing are sufficient to enable any person skilled in the art or science to which it most nearly 'appertains to make and use my said invention or improvement without further invention or experiment.

My invention relates to an improved sash stop and lock, which is especially adapted for Y the windows of cars, steainboats, and other places where two or more parallel sashes are employed; but it can also be used on single sashes, when desired; and it consists in two or more loosely-fitting cams arranged on a shaft running transverse the window-frames, and operated by a crank-handle lever, as more particularlyhereinafterdescribed,andsetforth in the claims. 7

In order to explain my invention so that others" will understand its construction and operation, reference is had to the accompanying drawing forming a part of this specification, in which- Figure 1 is a perspective view of a window with my stop attached. Fig.2 is a view of a stop for the inside sashes. Fig. 3 is a view of av double stop and lock for the outside sash.

A is a window-frame, such as is employed on railway cars, in which two or more sashes are arranged to move parallel with each other. In the frame A, at a convenient point, preferably near the upper end, I place a square shaft, b, transversely to the movement of the sashes. About this shaft, opposite the edge of each sash, I make a recess, and upon the shaft Now, when this crank is turned toward the window the cams will bear against the sashes; and, whenit is desired to raise one of the sashes, by pushing upward upon it the loose movement of the cam upon the shaft will permit it to give sufficiently to allow the sash to raise; but, when the upward pressure upon the sash is removed, the same free movement of the cams allows them to bind the edges or the sashes and stop them at any point. The leverage of the weighted crank keeps the cams bearing against the edges of the sashes all of the time. All of the sashes can thus be raised and stopped at any point by the simple effort of one hand, and the stop action will be a positive one.

When double or, triple sashes are used in one window, it is desirable to lock the outside sash when the window is not in use. To do this I employ the loosely fitting double cam d opposite the edge of the outside sash, so that, when the weighted crank f is turned to the right, the lower half of the double cam 01 will bind against the edge of the outer sash, and in an opposite direction, and then look the sash in its position, so as to prevent it from being raised.

, The lower inside corner of the double cam d I cut away, as shown at Fig. 3, so as to allow the crank f to stand at an angle of about forty-five degrees when turned to the right, so that its weight will serve to keep the lower cam snugly against the sash; otherwise the cam would slip, and the, fastening'would be insecure.

A rubber or other face may be employed, as at Fig. 2, in case of wear, to avoid the change for larger cams.

By this means I provide a cheap convenient sash stop and look for this classof wihand seal.

HENRY THOMAS. [L. s]

Witnesses JOHN L. BooNE, O. M. RICHARDSON. 

